Clubs have displayed the Cinch logo but Rangers have refused
Rangers chairman Douglas Park has won a court order to delay Scottish FA arbitration in the club's sponsorship row with the SPFL.
The league asked the SFA to arbitrate after Rangers refused to promote car retailer cinch - the SPFL's title sponsors - citing an agreement they already have with Park's of Hamilton.
Now, the Court of Session have ruled that Park's - a rival car retailer owned by the Rangers chair - can take part in the arbitration process as an interested party.
The SPFL have warned the dispute could affect payments from the £8m five-year deal with cinch, warning clubs the stand-off presented a "real and substantial commercial risk".
A letter to clubs said the SPFL board - on which Rangers managing director Stewart Robertson sits - had been trying to settle "this very serious impasse" to no avail.
It also states that Rangers have not provided the SPFL board with "sight of any pre-existing third-party contract" that would represent a conflict of commercial interest.
However, the Ibrox club said the Court of Session ruling "once again underlines ongoing concerns regarding the corporate governance and leadership of the SPFL".
They added: "We have complied with the SPFL's own rules but today's court hearing was one that could easily have been avoided if those responsible had adopted a more consensual and less confrontational approach.
"Instead, an inadequate and antagonistic approach appears to have been adopted; one that it is hard to imagine is in the best interests of the SPFL's member clubs."
The SPFL declined to comment when approached by BBC Scotland.
Scotland's leagues had been without a title sponsor last season after the previous deal with bookmaker Ladbrokes ended.
'Someone is going to be embarrassed' - analysis
BBC Sport Scotland's chief football writer Tom English
Rangers believe they gave the SPFL due notice that they couldn't honour the Cinch deal because they had an existing commercial arrangement with the Park's Motor Group which gave them exclusivity inside Ibrox. They said they told that to the SPFL, to chief executive Neil Doncaster, but that the deal went ahead anyway.
It's about that contract Rangers have with Park's. What's in it? Rangers are utterly convinced after checking with lawyer after lawyer that they are in the right. The SPFL are convinced they are in the right. So somebody is wrong and somebody is going to be embarrassed by this.
It's a bit of a bloody nose for the Scottish FA. But I think the bigger picture is its Rangers and the governance of the SPFL, and the Cinch thing is the vehicle that might - in Rangers view - possibly remove Doncaster.
